Recipes for lettuce, herbs and leafy greens
For vegetative crops,most nutrientsolution recipes don’t adjust the ratio of nutrients while they grow; whereas, in fruiting crops the ratio may be adjusted to alter the shift between vegetative and reproductive growth. At Cornell’s Controlled Environment Agriculture group, for many years we’ve successfully used a modified Sonneveld’s recipe for growing lettuce >>>
Table 1. Three hydroponic nutrient solution recipes to prepare 100 gal. of fertilizer suitable for hydroponic production of lettuce, herbs and leafy greens. If preparing to dilute in a 100gal. reservoir, all the components within a recipe can be mixed into the water. If using stock tanks (i.e., a 100X concentration), then the calculations represent the amount to use per 1 gal. of stock. Where indicated, the Tank A and Tank B components MUST be prepared separately so a precipitate does not occur. If using stocks, dilute using 1:100 injector(s) (two injectors connected in series for Tank A and Tank B mixes). This will make 100 gal. of dilute fertilizer.
Recipes for lettuce, herbs and leafy greensFor vegetative crops,most nutrientsolution recipes don’t adjust the ratio of nutrients while they grow; whereas, in fruiting crops the ratio may be adjusted to alter the shift between vegetative and reproductive growth. At Cornell’s Controlled Environment Agriculture group, for many years we’ve successfully used a modified Sonneveld’s recipe for growing lettuce >>>Table 1. Three hydroponic nutrient solution recipes to prepare 100 gal. of fertilizer suitable for hydroponic production of lettuce, herbs and leafy greens. If preparing to dilute in a 100gal. reservoir, all the components within a recipe can be mixed into the water. If using stock tanks (i.e., a 100X concentration), then the calculations represent the amount to use per 1 gal. of stock. Where indicated, the Tank A and Tank B components MUST be prepared separately so a precipitate does not occur. If using stocks, dilute using 1:100 injector(s) (two injectors connected in series for Tank A and Tank B mixes). This will make 100 gal. of dilute fertilizer.
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